<?php
/*
 * Copyright (c) 2008 Sergey Bondari, bondari@bondari.net
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
namespace Mosaic\System;

/**
 * Stream write operation wrapper
 * @package Library
 */
function streamWrite($stream, &$data) {
	$bytesToWrite = strlen($data);
	$bytesWritten = 0;

	while ($bytesWritten < $bytesToWrite) {
		if ($bytesWritten == 0) {
			$b = fwrite($stream, $data);
		} else {
			$b = fwrite($stream, substr($data, $bytesWritten));
		}

		if ($b === false || $b == 0 ) return $bytesWritten == 0 ? false : $bytesWritten;


		$bytesWritten += $b;
	}

	return $bytesWritten;
}


/**
 * Stream read opreation wrapper
 * @package Library
 */
function streamRead($stream, $bytes) {
        $bytesRead = 0;
	$data = '';
	while ($bytesRead < $bytes) {
		$_ = fread($stream, min($bytes - $bytesRead, 8192));
		$data .= $_;
		$bytesRead += strlen($_);
	}

	return $data;
}

